September 29, 2023
How to Jailbreak Your iPhone 3GS, iPhone 4 Using Greenpois0n (Mac) [4.2.1]

How to Jailbreak Your iPhone 3GS, iPhone 4 Using Greenpois0n (Mac) [4.2.1]
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Posted February 3, 2011 at 11:47pm · 143 comments · Add Comment
flashzoom - February 4, 2011 at 1:12pm
this only give you jb that's all. so you need to update ur phone to 4.2.1 on ur own. via iTunes yes, all ur apps will be deleted. yes, after it you can restore your backup from iTunes. but might not be recommended. so here are a quick step by step. connecto to iTunes, do a full backup of your phone. then do a restore to 4.2.1. all your data will be deleted. after the restore completed, then you can full the greenpois0n. but remember, if you need unlock, there ultrasnow doesn't support the new firmware yet.
sammydeea - February 4, 2011 at 12:21pm
hope someone can help ..i have a iphone 4 latest firmware and previously jailbroken tethered with redsnow. done a restore so i could install fresh greenpoison, so i go through the press home ect stage and it says completed! but nothing!! the phone restarts itself the only thing the screen does is flash white for a second then goes onto my home menu with no loader and no jailbreak. i have none of the text that suposed to come up on the screen while it does its buisness! ive tried about 20 times now
sammydeea - February 4, 2011 at 12:47pm
managed to figure out the problem. if anyone else is having the same problem please make sure your downloading the up to date greenpoison. i downloaded it from the website but was giving me the earlier bulid. hear is a link to the newest one
lorvar - February 4, 2011 at 12:08pm
My iPad goes through all the motions even as far as saying complete, but no text script scrolling, just a reboot. WTF. With soooo many different issues, why release this junk. Appreciate the efforts but just release it when it's fully tested with different variables and scenarios the end user might have. Waste of 3 hours.
sammydeea - February 4, 2011 at 12:43pm
ive had the same problem trying for ages then realised the gp i got from the site was a older version! try this one its the latest..i can now get the text scrolling lol but no encountering the next stage problem of it being able to find gbdevlist ect..
lorvar - February 4, 2011 at 1:14pm
Tried the link Sammy, same thing, no change.
koonce - February 4, 2011 at 10:30am
greenpois0n will no launch.. ive tried and tried and nothing has happened.2/4/11 9:25:36 AM [0x0-0x78078].greenpois0n[638] Reason: Incompatible library version: greenpois0n requires version 6.0.0 or later, but libcurl.4.dylib provides version 5.0.0 2/4/11 9:25:37 AM[101] ([0x0-0x78078].greenpois0n[638]) Exited abnormally: Trace/BPT trap!!!!!! what does this mean???
Dodgy - February 4, 2011 at 9:54am
GreenPoison worked for me on iPhone4 but after some 3 hrs of nightmare. If you manage to do a fresh restore on 4.2.1 (i bump into error 1013 restore to 4.2.1 earlier but managed to solved it after googling a solution) then you can get started. The 1st common problem is that after GreenPois0n is intiliazed it get stuck there (happen to me 10x or more). However, thanks to someone here who mentioned opening "console" as well on the Mac, it did run instead of stuck. So the trick it that you need to open up "console", from spotlight (far upright), search for console and then start it before or during running of GreenPois0n. After u get the phone to reboot with the greenpoison icon, the jb should be completed and you will see a "loader" icon on yr phone. The loader icon supposed to install Cydia somehow doesn't work at all (presumably the server is busy or down). You can try though. This is the 2nd common problem. To solve this (thanks to another person here), run redsnow 0.9.7b, select only install Cydia, that should solve the Cydia problem and you are done!
neilgmac - February 5, 2011 at 1:20pm
Running "console" really works on me
CHOPPER - February 4, 2011 at 9:44am
Coleman - February 4, 2011 at 12:22pm
just install cydia with redsnow 0.9.6b6
CHOPPER - February 4, 2011 at 12:32pm
Any chance you could explain how to install Cydia with redsn0w? I have jailbroke with gp already... Thanks
Albert - February 4, 2011 at 9:25am
If i have an iphone 4.2.1 on 3.1.3 baseband should this work?? another question my iphone is not activated with AT&T, actually not activated at all im waiting for the unlock, is this only usefull for activated phones ???
tim - February 4, 2011 at 8:58am
greenpoins0n server down... as if rely on servers to deliver the package... guess we'll have to wait for the server hammerin to stop...
Rj - February 4, 2011 at 9:13am
neogeorex - February 4, 2011 at 8:56am
SUCCESS!! JAILBREAK AND UNLOCK OF 3GS !! I will be damned, I made it work. So here is what you will have to do to jailbreak and unlock your iPhone 3GS, no matter what bootrom. Don't blame me if something goes wrong, it worked for me ;) Connect your 3GS and let iTunes do its job by updating the Phone to 4.2.1 When done, you will need to jailbreak it. Therefore take the iPhone into DFU-Mode (remember, this works only with iPhone connected and running iTunes). iTunes should report it has recognised an iPhone in restore mode. (If done correctly, you should not see anything on the iPhone's screen. If you see "Connect with iTunes", you did something wrong. Start again) Now you are ready to jailbreak with the just released Greenpoison - tool. BEFORE you hit the Jailbreak button, turn of iTunes! Now Greenpoison is doing its job. (thank you cronic-dev team) After jailbreaking, you should see the animated skull while the phone boots. If everything worked as on mine iPhone, you should now see the activation screen. Here is, where I got stuck, since I don't have the original SIM to activate. But as it turns out, we don't need it :) Now we need Redsn0w. I used 0.9.6rc8 Redsnow needs the original IPSW (iPhone firmware) to start working. You can find download links also here at iClarified. Next Redsnow asks if you have a newer (BB) model of the iPhone. I chose yes, since I updatet it via iTunes, so the BB got updated anyhow. The next screen is important. Here you mark: Install Cydia AND Install iPad baseband. And hit next. Now let Redsnow do its magic... After reboot you should come past the activation screen and have cydia already installed. Connect your iPhone to your WLAN and update Cydia. After Cydia reboots your iPhone you will notice that the jailbreak(s) you performed are untethered, which means the iPhone can boot up without connecting to the Mac :D Now enter Cydia again and install the Unlock - Ultrasnow! Oh my oh my - after rebooting put in the SIM of your choise and... YEAH From what I understand, this is somehow a combination of the jailbreak tools for one redsnow to downgrade the baseband and greenpoison to make it untethered. Leave a nice comment if it worked for you as well. Good luck!
Kokibird - February 4, 2011 at 9:11am
Could you please share the release 5 of greenpoisn cuz the server is down?
neogeorex - February 4, 2011 at 9:35am
Here you go:
Steve Job
Steve Job - February 4, 2011 at 11:21am
Now you're stuck with a ipad bb... and you can't downgrade
neogeorex - February 4, 2011 at 11:49am
Hm, don't quite understand where the problem is... I might be stuck with the iPad baseband, but why would I want to downgrade?? This tutorial is for those, who want their locked 3GS finally to use as an iPhone and not just as an iPod Touch
Ming - February 4, 2011 at 1:11pm
Hi, Any idea of how to turned a tethered and unlocked 3GS into a un-tethered one? I have a 3GS currently jailbreak (Pawnge tool) and unlocked (redsnow) with iPad baseband, OS 4.2.1. How do you suggest to use Greenpoison to make it untethered? Thanks,
monz - February 4, 2011 at 2:18pm
your method seems to be running redsn0w over greenpois0n..does anybody tried vice versa? running greenpois0n over redsn0w..for example on 3GS IOS 4.2.1 with iPad BB 6.15..any luck???
clhilliwho - March 9, 2011 at 1:10pm
gr8 instructions. a life saver :) Cheers
SaRg - February 4, 2011 at 8:52am
It doesnt work for me :(, did everything restore, DFU mode and sometimes it workds sometimes it doesnt, but when it does that you get to see the coding as soon as it boots up its still on the the itunes, conect, emergency thing, screen is not jailbroken.. anyone ? ? ?
yank - February 4, 2011 at 1:35pm
Same here dude... even its not working for me....
Lino - February 4, 2011 at 8:32am
I have run Greenpoison 3 times now on my Iphone4 but the Loader App is not there!
eLL Mobile Maldives
eLL Mobile Maldives - February 4, 2011 at 8:08am
when will be the windows version release? husein eLL Mobile Maldives
Jordan - February 4, 2011 at 8:02am
I am just curious, I've never been succesful, but is there any way to keep saved game data on my phone. Since jailbreaking, you should always set the phone up as a "new phone" instead of a back up, I lose my game data whenever I restore and jailbreak again. Are there any apps out there to assist in saving said game data once I restore to 4.2.1?
john - February 4, 2011 at 10:21am
u r stupid!!! who said u have to set it us as a new phone???
Jordan - February 4, 2011 at 11:55am
So you have successfully backed up a jailbroken device then restored to a back up and the phone was fine after rejailbreaking it? Look it up, you are supposed tonset up as a new phone. Idiot
Leonick - February 4, 2011 at 12:10pm
No, you do not need to set it up as a new device. You should do a full restore to the version of iOS you are jailbreaking though. After that you can jailbreak the device and and restore your backup. If however you used any tweaks to springboard like folderenhancer or had hid some icons or such you should install the correct packages from cydia before restoring the backup though.
john - February 4, 2011 at 6:08pm
like i said, u r an idiot. u talk so confidently like u know what u r talking about. yes i have backed up from an older firmware, yes i have updated to a newer firmware, yes i have jailbroken and yes i have restored from the backup after the jailbreak. the process has been like that for a long time now. so in other works, u r an idiot! stop pretending to be smart. idiot!
john - February 7, 2011 at 4:29am
hey stupid! what is 1 + 1? can you tell me please coz u r so smart...
neogeorex - February 4, 2011 at 7:34am
For all who are having problems with some failiure masseges at the beginnig of jb: "Cant find xxx", try turning off iTunes after getting into dfu mode. That worked for me. However now I'm stuck at the activation screen and I don't have the original SIM. Anywone who knows a workaround? 3GS with (probably) new bootrom @ 4.2.1
simon - February 4, 2011 at 7:19am
my MAC 10.5.8 OS can't open the program ,what the problem ?
Bibi40k - February 4, 2011 at 8:21am
You need Snow Leopard
john - February 6, 2011 at 9:45pm
what the problem? problem you.
Richard - February 4, 2011 at 7:13am
Guys, Mine is working. Here is what I did. I did a clean restore of 4.2.1. Then, I jailbroke using greenpois0n. Once your jailbroke successfully you will see that loader app. Disregard that because I tried to download cydia through there several times getting up to 95% and then it would just crash or say success even though it didn't finish. The way to get around that is using redsnow to just install cydia. Download redsnow, plug phone into computer turn off. Run redsnow and select the tab that says install cyda (this is the only tab you will check) press next and get ready to place phone into DFU mode (It will prompt you through the steps). It will install cydia and voila problem solved. Follow this link, all the way to the bottom you can download redsn0w - * I did this on a MAC (Goodluck Guys)
bob - February 4, 2011 at 4:11am
so if you have already jailbroken with redsn0w on 4.2.1 and you just run greenp0sion to unteather?
colemanlee09 - February 4, 2011 at 4:14am
No, you should do it off a fresh restore and put everything back on after.
bob - February 4, 2011 at 4:17am
il just leave it teathered then, to much effort to reinstall all my apps and settings! or il wait till redsn0w release their unteather.
Colemanlee09 - February 4, 2011 at 4:21am
Redsnow does have an untethered. If you're currently tethered just click untether jailbreak Monte and you should be good on 0.9.6b6. Never worked for me though so I just went ahead and did it with greenpois0n.
Lolz - February 4, 2011 at 4:30am
I had the tethered jailbreak, I run the greenpois0n jailbreak had 0 problems, now i have untethered jailbreak with all my cydia apps music videos settings... iphone 4 16gb
ColemanLee09 - February 4, 2011 at 4:32am
Congrats! Got lucky, some people really messed up their devices by not doing it off a fresh restore. All kinds of errors. That's why I don't recommend it.
bob - February 4, 2011 at 4:34am
just got redsn0w 0.9.6b6 dont see an unteather option. I have a newer model 3gs btw.
ColemanLee09 - February 4, 2011 at 4:35am
I meant 0.9.6b5 sorry.
bob - February 4, 2011 at 4:42am
still cant see it, do i need them other 4.3beta blobs?
ColemanLee09 - February 4, 2011 at 4:50am
Yea you need a 4.2.1b3 shsh blob. I can post the 4.2.1b3 firmware if you need it.
bob - February 4, 2011 at 4:57am
i think i will just try running the greenposi0n, if it fails i will just restore. wish me luck!
bob - February 4, 2011 at 5:25am
so the greenposi0n never worked for me. says it completed but no "verbose mode text"
ColemanLee09 - February 4, 2011 at 12:24pm
thats why i recommended the fresh restore before it..... but we all try. some people found luck!
snowlep - February 4, 2011 at 3:58am
I tried it several times on my Ipad (4.2.1) connected to my Imac. It always fails and shows the following greepois0n errors: Unable to find gBdevlist Unable to find fs_mount Unable to find fs_unmount Unable to find fs_load_file :( :( :( Greenpois0n initialized
Coleman - February 4, 2011 at 4:01am
Same issue. Doesn't work on my iPad but it works on my iPhone 4. Maybe its not eligible for all idevices yet as promised, thats why the title says only iphone 3gs and 4.
oshioshi - February 4, 2011 at 5:27am
You need to keep holding the home button in the last step, throughout the error messages. After a couple of seconds, the device will start scrolling text for about 2 - 3 minutes, then restart automaticaly and voila, jailbroken.
Boyko - February 4, 2011 at 5:40am
Workaround for this: you need to go in console to folder and run the binary file manually inside the console... for example: $ cd / $ ./greenpois0n the gp window will open, use it normally and it will work... you have to go inside the folder, if you run it from another folder in the console it won't work.
Coleman - February 4, 2011 at 3:45am
I thought this jailbreak was for all idevices? the titles says iphone 3gs and 4 only? i got it to work on my iphone 4 but not on my ipad. so maybe it isn't for all idevices.
Pez - February 4, 2011 at 2:46am
Hey … I’m not sure if anyone can help but any help will do. My uncle gave me his iPhone 4 and he didn’t know that my career was T-Mobile. Long story short, I restored to 4.2.1 BB 3.10.1 and it’s been sitting on my desk for a couple of months – now that there is greenpois0n rc5 – will I be able to jb then unlock with a legitimate sim? or do i need to use an at&t sim to even see my springboard? thanks so much for any information you give me :P
JAMES - February 4, 2011 at 1:29am
don - February 4, 2011 at 1:51am
cant you read? iOS 4.2.1..............
David - February 4, 2011 at 2:40am
I think this is the stupid question
pez - February 4, 2011 at 2:44am
he mean't baseband -_-
Brock - February 4, 2011 at 1:18am
I've tried Greenpoison on iPhone 4 three times and have not had the Loader app show up. Anyone successfully jailbreak an iPhone4?
Bibi40k - February 4, 2011 at 6:48am
you need to use RC5 (works only on SnowLeopard)
Jason - February 4, 2011 at 12:49am
VERIFIED CYDIA FIX: Download and Install GP; then run Redsn0w 0.9.7b6, select the 4.2.1 IPSW, then just tell it to install Cydia (no Monte), and follow through. Greenpois0n will remain, but it will correctly install Cydia without having to use worthless Loader app.
NB - February 4, 2011 at 1:13am
jb with gp first then use redsn0w or use redsn0wand then jb with gp?..Thanks
Coleman - February 4, 2011 at 3:44am
jailbreak with gp first, then use 0.9.6b6 redsn0w to install cydia.
juiceman - February 4, 2011 at 12:14am
i have an iphone 4 32 gb OS 4.2.1 with baseband 03.10.01 can my phone be jailbroken? i keep getting an error after it goes into DFU
SasaBelgrade - January 10, 2011 at 11:49pm
Will Limera1n or Greenpois0n preserve my baseband if I upgrade to OS4.1? iPhone 3Gs, OS 4.0.1, 05.13.04, 36th week
Cheba - February 4, 2011 at 3:39am
No it won't. If you want to preserve BB use PwnageTool.
Scott - December 4, 2010 at 1:00am
I have an iPhone 3gs on OS 3.1.2. I ma trying to upgrade to OS 4.0.1 but apple wont let me, I can't get past the "verifying will apple" past. It says i am not eligible for restore. Any ideas as to what I can do? I need it to be unlocked because i am on T-Mobile. I don't want to go the iPad BB route, what can I do?
Me - February 4, 2011 at 12:29am
google is your friend.
Sunil - February 4, 2011 at 5:12am
1.Open cydia and save shsh..2.use tinyumbrella to save shsh and to restore to ur desired firmware.It'll preserve ur baseband.3.Then jailbreak with Limerain or Redsnow
Marcelo Pardo
Marcelo Pardo - November 22, 2010 at 8:58pm
Guys, Just to let you know, My Iphone 4 32g on the 4.0.1 firmaware jb and unlocked crashed and entered on the boot loop mode. I got on DFU mode, and it was impossible to restore to 4.0.1, so I used the pwnage 4.1.4 and did a restore without uploading de baseband to the 4.1 firmware. After that It didn't work to do phone calls cause it's locked, even with the ultrasn0w installed, it didn't got carrier signal, but Id did another jailbreak with greenpoison and reinstall the ultrasn0w, and now, it's perfectly working! So if you are having trouble, use pwnage 4.1.2 to restore to the firmware 4.1 it will not upgrade the baseband, keep it on the 1.59.00, than do again the Jailbreak with greenpoison and install ultrasn0w via cydia! tks regards!
yasbm - November 1, 2010 at 11:29am
This is great just did the test with mine old 3gs Iphone 4.1 BB 05.14.02 ( SIM LOCK FREE I DONT HAVE ANY CARRIER ) . great job and thanks all Guys, IF YOUR PHONE IS LOCK (with carrier DONT DO IT ) WITH BB 05.14.02 DONT DO IT, Do not upload to 4.1 or you phone will be useless, READ BEFORE ANY JAILBREAK. My phone alre all sim lock free so I can do it. thanks to you guys really nice
linda - October 19, 2010 at 12:09am
how about unlocking iphone 3gs, baseband 05.14.02! how long it will take untill u guys released it! thank you!
yasbm - November 1, 2010 at 11:31am
If your phone is not SIM LOCK free you can not do anything until the last release .
Boywonda - October 18, 2010 at 10:45pm
Okay well if that's the case why don't you just do a software update to your Mac? I have OS 10.6.4 and it Greenpois0n works just fine
NC - October 17, 2010 at 12:36pm
The tutorial said use Limera1n to unlock 4.1 and jailbreak for 3GS. That is wrong. Limera1n does not preserve baseband!
lam - October 17, 2010 at 10:37am
I have completed installing loader in iphone but it was fail to install cydia. now i could not run cydia in my iphone and could not remove cydia from it either. any advice? appreciated very much. Lam
ortakus - October 17, 2010 at 12:42pm
if you haven't already, try rebooting the phone and try installing cydia again. if it doesn't work: rejailbreak your phone and try installing cydia again. hope this helps.
JOE - November 1, 2010 at 11:42am
yasim u dont know what ur talking about my phone is locked up and i used new limerain that was released 2 hours ago and now it is unlocked and it is jail broken so get ur fact right
BABU - November 1, 2010 at 11:45am
Whats the piont
Whats the piont - October 17, 2010 at 10:07am
I want thee new baseband too :-(
Zweigel - October 17, 2010 at 3:24am
Does it work with PPC? A real mac :)
mrcheese - October 21, 2010 at 7:14pm
"justabrake wrote at 2010-10-18 03:08:43 I tried Greenpois0n with my MAC 10.5.8 OS and it doesn't work ! I read in another forum where it only works with MAC OS 10.6"
sergy - February 4, 2011 at 11:42pm
no work in ppc its a shame please make work universal in mac os
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